LTC3411_15 Datasheet, PDF (21/24 Pages) Linear Technology – 1.25A, 4MHz, Synchronous Step-Down DC/DC Converter

TYPICAL APPLICATION
2mm Height, 2MHz, Li-Ion to 1.8V Converter
V_IN
2.63V
TO 4.2V
C6 ⁺ C1
1μF
33μF
C7
47pF
R3
15k
C3
470pF
PV_IN
PGOOD
SV_IN
SW
LTC3411
SYNC/MODE
I_TH
V_FB
SGND PGND SHDN/R_T
R5
100k
PGOOD
L1
1μH
C4 22pF
R1
R2
698k 887k
R4
154k
C1, C2: AVX TPSB336K006R0600
C4, C5: TAIYO YUDEN LMK212BJ105MG
L1: COILCRAFT DO1606T-102
+ _C2
33μF
LTC3411
V_OUT
1.8V
C5 ^{AT 1.25A}
1μF
3411 TA04
Efficiency vs Load Current
100
95
90
2.5V
85
3.6V
80
75
70
4.2V
65
60
55
V_OUT = 1.8V
f_O = 2MHz
50
1
10
100
1000
LOAD CURRENT (mA)
10000
3411 TA05
3411fb
21